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Molar Mass
Mole to Mass
Percent composition
Mass to Mole
Mixed
100
This is the molar mass of H
2
SO
4
.
What is 98g?
100
This is the number of grams in 0.5 moles of gold.
What is 98.5 g?
100
After dividing the 2 masses (mass part/total compound), you must multiply by this number always to get the percent composition.
What is 100?
100
This is the number of moles in 100 g of N
4
O
10
.
What is 2.16 moles?
100
This is the number of moles of H
2
formed from 2 moles of H
2
O according to the reaction: 2H
2
O --> 2 H
2
+ 1 O
2
What is 2? (Use the coefficents)
200
This is where to look to find the mass of 1 mole of any element.
What is the periodic table?
200
This is the mass of 6.39 moles of table salt.
What is 373.8 grams?
200
This is the percent composition of hydrogen in water.
What is 11.1% H?
200
This is the number of moles in 500 g of C
4
H
4
O
3
.
What is 5 moles?
200
This is the first step in calculating the number grams in 1 moles of a particular compound.
What is find the molar mass of the compound?
300
This is what you must use when converting between mass and # of moles.
What is molar mass (or molecular weight)?!
300
This is the mass of 4.148 moles of fluorine gas.
What is 78.7 g?
300
This is the percent composition of hydrogen in ammonium hydroxide.
What is 14.3% H?
300
This is the number of moles in 350 g of C
3
H
4
N
2
O
2
.
What is 3.5 moles?
300
This is the number of moles in 196 g of C
4
O
2
H
8
.
What is 2?
400
This is how to find the molar mass of any COMPOUND.
What is the sum of (the number of atoms of an element times its molar mass)?
400
This is how many grams are in 25 moles of ammonia.
What is 425 grams of ammonia?
400
This is the percent composition of nitrogen in (NH
4
)
2
S?
What is 41.2% N?
400
This is the number of moles in 875 g of C
2
H
7
F
2
P.
What is 8.75 moles?
400
This is the mass of 4.31 moles of C
8
H
16
N
4
O
2
.
What is 862 g ?
500
This is the molar mass of (NH
4
)
3
PO
4
.
What is 149 g?
500
This is how many grams are in 100 moles of potassium hydroxide.
What is 560 grams?
500
What is the percent composition of oxygen in copper (II) phosphate?
What is 33.5% O?
500
This is the number of moles that are in 12.75 g of C
4
H
8
N
2
O.
What is 0.13 moles?
500
This is the percent composition of each of the elements in C
15
H
36
N
6
.
What is 60% Carbon, 12% Hydrogen, and 28% Nitrogen?